Study On Application Of Durability Protective Agent For Hydraulic Concrete In Cold Area

In this study, the durability of hydraulic concrete in cold areas Protectant for the study, summarizing the preliminary work and research at home and abroad on the basis of the mechanism of cold water infiltration area around hydraulic concrete durability protectants depth discussion, through laboratory tests, methods of data compared with the combination of engineering practice, research in cold regions hydraulic concrete durability repellant properties. Through comparative analysis of the test, after repellant penetration reaction in concrete under the influence of different technological research on the mechanical properties and durability of concrete physical energy.Mainly through impermeability, frost, carbonation, changes in strength and wear parts and test pieces benchmark comparison of concrete to be inorganic anti-repellant properties of concrete improvements. In the micro level, by mercury testing, electron microscopy and other experimental tools, explains penetrate protective mechanism protectants, for cold regions hydraulic concrete mechanism to improve the durability of concrete durability repellant comparative study of macro and micro.Through engineering practice, study construction methods, handling and process parameters hydraulic concrete durability and using effects of protective agent durability. The test research and engineering practice shows: Use of hydraulic concrete durability repellant surface hardening treatment, repellant generate new filler and concrete curing reaction by crystallization internal product, so that the concrete harmful pores are filled, blocking and cut off, increase the density of the concrete surface, the concrete surface becomes hydrophobic interface that allows lower water absorption, prevent environmentally harmful media intrusion internal hydraulic concrete, effectively improve the durability of hydraulic concrete, reducing structural maintenance and repair costs, extend the service life of hydraulic concrete structures.